Saztd wheel eob oil wells



Get. 9, 1923,

E. M. SMITH SAND WHEEL FOR OIL WELLS Filed Dec. 6, 1921 l vwzyvroz I EDWARD M SM/TH,

A 7' TO'FFNE Y6.

i i PatentediO aaflaziii. l

- and useful Sand Wheel for '7 To a ll'iuiiomitmdg concera." SMITH, a zcitizen of the United States, residing at'Los J sassWHE Lros oit wsm"' 1 epiilicationfiled December a, 11321." 36551305520 51; l

' "Be it known'that I, EDXlIA RD M Angeles, inthecounty of Los Angeles and State of California, have invented a new Which the followingisaspecification.

7' Y 'My inventionrelates to oil well drilling and operating equipmenh'and relates par-- upon which the sand line is .wound, is revolved. v l V V "In oil well equipment, sand reels upon a ""which' the sand line is wound are revolved.

wheels of wood cants, as wood furnishes '7 greatergripping qualities than-metals,'but a decided disadvantage exists in the use of wood due to the poor wearlng qual ties thereof and its low resistance against the high frictional heat to which it issubje'cted.

It is an object of my invention'to provide asand wheel which willhave high resists t anceto wear, and which will have greater gripping qualities than those now in use.

' t is also an object of my invention, to provide a sand wheel, the surface OfWlllClfl will not ignite dueto-the excessive fric--- tional heat caused the slipping of the sand Wheel upon thebull-wheel.

It is a further object of'my invention to V n p bloc'ks 28 s slightly "concave,so that ai'flat 99.. gripping power I :The feature of supplywhich may be-quickly and 'cheapIy repIaced.

Other objects and advantages willappeair V hereinafter from the following 'specificationi, p p

" 1 -bloeks-QS makes it poss ble to expediently "and drawings.

illustrative purposes only, a

' n F g. 1 is a fragmentary perspective View.

7 E illustrating the: application of sand'wheels.

,Fig. 2 is a perspective view partially in section illustrating a preferred form of my invention. 1 r

Fig. 3; is a fragmentary gdetail showing several ofthe friction blocks anda portion oftheretaining member illustrated in Fig.

l, disposed in extended relationship.

sand line, has mounted upon the same shaft I therewiths'a' sand wheel-'12 adapted, to be i nnit/ n sni s,i n nds eneEfnEs LQAiiEoRivIAfl --;wheel Hfby 'ac'tuatingfa lever' 15in thedirectionfof' the arrow 1-7, "the lever 15 'be I on Wells, of-

y S ere; ticularly to a sand wheelvby hi the it has become considerably ing connected to a pivoted arm-l8 through a bar -19 so that with the :forward movementzo-f;thetjlever '15,} a movement in the direction of thefarrow20is imparted-tothe v arm l8L- lTheWQfiI} to which the circunifer- T ential surfaces of these sand wheels are sub: I

ed, which is very dangerous around aproducing well to the liability of oil igniting] 7 v V ,l In the embodiment of my invention shown I employ a pulley 25which I is mounted upon the. sand reels-haft 26, this pulley having disposed around the periphery thereof a layer-27' of a material having conside'rable gripping "power and. high fric tionalresistance, such-as asbestos. It is preferabletoprovidethis layer 27 in the form of arcuate d blocks28, which maybe maintained. between the flanges 29'21I1Cli 30i ofa circular' channel member 31 placed over f I) the; band 33 of. the pulley 25, the blocks 28 31 being secured 34 "which extend and the" channel member, upon the band '33 by bolts renewthe frictional engaging layer '27 when worn, away. 1

' l Vith the-use of any invention, the fire; hazard due toi'the sparks caused by the fric: tion botweenthe sand wheel and the bull wheel of an oil well'drilling vequipmentfis now in Pi s the expediency 'andeconomy of "renewing the friction" blocks, ff a I claim as my invention'z' V use,'resides in the increased, grip-.

of: a cylindrical.band;a block-retainer hav-i i e 7 ing a cylindrical bofreto fit snugly upon and theheatgenerated by the friction between-thesand wheel andfl the bull wheelfisfsometime's .sufficient vto igi nite splinters of the ,wood froniwhich the sandiwheel andthe bull wheel are construct through counter-bored h'oles35 in the bloeks.-. I}, Y 28 and holes '3 i 10o entirelyeliminated; A desired'advantage of v my inventlon over'the wood sand wheels power, the high resistance to wear, and 11' :1. In. a fI'lOtlQii pulley, "the 'ombi mtion' I V r 7 1,4693% Said band a pluralipy of friction blocks fitting over and cal rmedbyi said retainer; V zg-nd boltg passing tlprc'qxigl;v said blocks, said retainer and said band and lbeking'saicl reminer and blocks soliclly on said band; 7 V 2. A combination as specified in'claim 1 in which the band. retainer is in film form of a channel'with the fiafiges turned out I Wardly, said bleek s fitting snugly between said flang s- Setmy hand at LesApgelegcalifemie, this 1 1p test mony whereof; I have hereunto 

